Assessment of Techcrete : a concrete repair material and joint sealant.

Details

• Creators:
  Tremblay, Jason P. ; Colgrove, George W.
• Corporate Creators:
  Vermont. Agency of Transportation. Materials and Research Section
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  Concrete Pavements Evaluation Field Studies Joint Sealing Pavement Maintenance
• Publication/ Report Number:
  2013-11
• Resource Type:
  Tech Report
• Geographical Coverage:
  Vermont
• Corporate Publisher:
  Vermont. Agency of Transportation. Materials and Research Section
• Abstract:
  Joint sealing and resealing is a commonly performed concrete pavement maintenance activity that serve
  
  s
  
  two
  
  purposes. First, it minimizes water infiltration; second, it prevents intrusion of solid materials in the joints. There
  
  are many sealants available for resealing concrete joints including hot
  
  -
  
  poured, rubberized asphalt sealants and
  
  silicone sealants
  
  . According to a Federal Highway Administration technology brief, “the hot
  
  -
  
  poured, rubberized
  
  asphalt sealants are less expensive than silicone materials but generally have shorter life expectancies (typically, 4
  
  to 8 years for hot
  
  -
  
  poured sealants and 5 t
  
  o 10 for silicone sealants) [1].
  
  In the fall of 2007, the City of Winooski resealed some of the pavement joints located along US Route 2 and 7 as
  
  part of their periodic preventative maintenance work, with a new hot
  
  -
  
  poured product, TechCrete, manufactured
  
  by
  
  Crafco. According to Crafco, this flexible material is a hot
  
  -
  
  poured product for concrete repairs, which provides high
  
  tensile strength and high compressive resistance. It is comprised of a combination of several resins, polymers,
  
  and aggregate. In ad
  
  dition, it has proven to provide a long
  
  -
  
  term life span in most applications. According to the
  
  manufacturer, once the material has properly cured, the materials will not de
  
  -
  
  bond or crack while remaining flexible
  
  during the expansion and contraction of the
  
  adjacent concrete slabs. Additionally, the affected lane can be open to
  
  traffic within one hour of application.
  
  In 2008, Crafco contacted VTrans to have TechCrete added to the Approved Products list. This study is an
  
  evaluation of the product. VTran
  
  s selected the Winooski site and a site in South Burlington where a concrete
  
  pavement was placed in 1997 that exhibited similar deterioration, to conduct a field evaluation of the product.
  
  
• Format:
  PDF
• Funding:
  2008-R-02 (MOD)
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:2b432ddf87874bbe10e7b155894b8dc05f9160a30f3baa674d2e24f8d2410a19
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/28322/dot_28322_DS1.pdf
• File Type:
  [PDF - 1.64 MB ]